The surveillance would help mitigate informational inadequacies that were largely the cause of excessive volatility.

CNN: VIEWPOINT

On Sept. 10, the CBOE Volatility Index (VIX) was at 31.8, quite high, as anything above 20 is considered excessive volatility.

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During the session, the share price was suspended limit-down, an automatic suspension system which kicks in when a share price is showing excessive volatility.

WSJ: Banks Drag European Markets Lower

The G7 announced they will cooperate as appropriate in the foreign exchange markets and combat excessive FX volatility.

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When hard times come, central banks may be able to raise interest rates, prevent excessive currency volatility and stick to their inflation targets.

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